PMID- 1353631 OWN - NLM STAT- MEDLINE DCOM- 19920831 LR - 20190907 IS - 0278-5846 (Print) IS - 0278-5846 (Linking) VI - 16 IP - 4 DP - 1992 Jul TI - Influence of the acute stress on agonist-stimulated phosphoinositide hydrolysis in the rat cerebral cortex. PG - 561-70 AB - 1. The present study was carried out in order to elucidate the influence of the acute stress on alpha 1-adrenergic, serotonin-2 (5-HT2) and muscarinic cholinergic (M-Ach) receptors-mediated phosphoinositide (PI) hydrolysis in rat cerebral cortex slices. 2. In rat cerebral cortex slices, noradrenaline (NA), serotonin (5-HT) and carbachol stimulated [3H]inositol-monophosphate (IP1) accumulation in a concentration-dependent manner. 3. The forced swimming test (FST) for 15 min induced a significant reduction of 5-HT-stimulated [3H]IP1 accumulation, but this stress situation did not produce a significant alteration of NA- and carbachol-stimulated [3H]IP1 accumulation. 4. The FST for 15 min did not affect the density and affinity of alpha 1-adrenergic, 5-HT2 and M-Ach receptors. 5. In a mild acute stress situation, the intracellular signal transduction mediated by 5-HT was promptly inhibited as compared to the signal transduction mediated by NA or carbachol. This inhibition may be induced by an acute uncoupling of 5-HT2 receptor-mediated intracellular signal transduction. FAU - Morinobu, S AU - Morinobu S AD - Department of Neuro-Psychiatry, Yamagata University School of Medicine, Japan. FAU - Kuwayama, N AU - Kuwayama N FAU - Kawanami, T AU - Kawanami T FAU - Okuyama, N AU - Okuyama N FAU - Takahashi, M AU - Takahashi M FAU - Totsuka, S AU - Totsuka S FAU - Endoh, M AU - Endoh M LA - eng PT - Journal Article PL - England TA - Prog Neuropsychopharmacol Biol Psychiatry JT - Progress in neuro-psychopharmacology & biological psychiatry JID - 8211617 RN - 0 (Adrenergic alpha-Agonists) RN - 0 (Phosphatidylinositols) RN - 0 (Receptors, Muscarinic) RN - 0 (Receptors, Serotonin) SB - IM MH - Adrenergic alpha-Agonists/pharmacology MH - Animals MH - Cerebral Cortex/drug effects/*metabolism MH - Hydrolysis MH - In Vitro Techniques MH - Male MH - Phosphatidylinositols/*metabolism MH - Radioligand Assay MH - Rats MH - Rats, Inbred Strains MH - Receptors, Muscarinic/drug effects MH - Receptors, Serotonin/drug effects MH - Signal Transduction/physiology MH - Stress, Psychological/*metabolism EDAT- 1992/07/01 00:00 MHDA- 1992/07/01 00:01 CRDT- 1992/07/01 00:00 PHST- 1992/07/01 00:00 [pubmed] PHST- 1992/07/01 00:01 [medline] PHST- 1992/07/01 00:00 [entrez] AID - 10.1016/0278-5846(92)90061-i [doi] PST - ppublish SO - Prog Neuropsychopharmacol Biol Psychiatry. 1992 Jul;16(4):561-70. doi: 10.1016/0278-5846(92)90061-i.